Rising Star: Folding Pattern and Working Mechanism of Functional RNA Molecules

Area of Science:

• Structural Biology
• Chemical Biology
• Molecular Biology
• Biochemistry

Background:

• Functional RNAs, including riboswitches, ribozymes, and RNA fluorogenic aptamers (FLAP), play crucial roles in gene regulation, catalysis, and fluorescence activation.
• These RNA molecules achieve sophisticated functions through dynamic structural rearrangements.
• Understanding the structure-function relationship of these RNAs is key to deciphering their biological roles.

Purpose of the Study:

• To elucidate the structural and mechanistic basis of functional RNA activities, focusing on riboswitches, self-cleaving ribozymes, and FLAP.
• To investigate how RNA architectures encode regulatory, catalytic, and fluorescence activation functions.
• To bridge RNA chemistry, structure, and dynamics to understand RNA function and evolution.

Main Methods:

• X-ray crystallography
• Cryo-electron microscopy
• Biochemical approaches
• Molecular biological approaches

Main Results:

• Elucidated how riboswitches couple ligand recognition to gene regulation via conformational shifts.
• Uncovered catalytic mechanisms of newly discovered self-cleaving ribozymes.
• Investigated the folding of RNA aptamers to stabilize dyes and enhance fluorescence.

Conclusions:

• RNA molecules employ elegant strategies for regulation, catalysis, and fluorescence activation through dynamic structural changes.
• The research provides fundamental insights into RNA function, evolution, and potential applications in therapeutics and tool development.